The HP Keysight (formerly Agilent) 8753E is a used vector network analyzer that provides magnitude and phase information, and can make group delay and time domain measurements as well.
The Keysight 8753E's processor makes measurements and data transfers up to seven times faster than HP 8753D's or HP 8753C's.
The overall throughput is enhanced by several new features such as simultaneous four-parameter displays and adapter-removal calibration.
Keysight, formerly Agilent 8753E – Key Features and Specifications:
You can rent or lease Keysight, formerly Agilent 8753E Network Analyzer at TRS-RenTelco with 24/7 customer support.